please solve this i have only 4 hour to submit this

Mike Li is a sales manager for an electric car dealership in Alberta. Mike earns a bonus each year based on revenue generated by the number of vehicles sold in the year less related warranty expenses. The quality of electric cars sold each year seems to vary since the warranty experience related to cars sold is highly variable. The actual warranty expenses have varied over the past 10 years from a low of 3% of an electric car's selling price to high of 10%. In the post, Mike has tended toward estimating warranty expenses on the high end just to be prudent. It is the end of the year and once again he must work with the dealership's accountant is arriving at the warranty expense accrual for the electric cars sold this year. Required 1. Does the warranty accrual decision present any kind of ethical dilemma for Mike Li? 2. Since the warranty experience is not constant, what percentage do you think Mike should choose for this year? Justify your response